feat(server): implement FTS5-based full-text search (#5079)
* build: add sqlite_fts5 build tag to enable FTS5 support
* feat: add SearchBackend config option (default: fts)
* feat: add buildFTS5Query for safe FTS5 query preprocessing
* feat: add FTS5 search backend with config toggle, refactor legacy search
- Add searchExprFunc type and getSearchExpr() for backend selection
- Rename fullTextExpr to legacySearchExpr
- Add ftsSearchExpr using FTS5 MATCH subquery
- Update fullTextFilter in sql_restful.go to use configured backend
* feat: add FTS5 migration with virtual tables, triggers, and search_participants
Creates FTS5 virtual tables for media_file, album, and artist with
unicode61 tokenizer and diacritic folding. Adds search_participants
column, populates from JSON, and sets up INSERT/UPDATE/DELETE triggers.
* feat: populate search_participants in PostMapArgs for FTS5 indexing
* test: add FTS5 search integration tests
* fix: exclude FTS5 virtual tables from e2e DB restore
The restoreDB function iterates all tables in sqlite_master and
runs DELETE + INSERT to reset state. FTS5 contentless virtual tables
cannot be directly deleted from. Since triggers handle FTS5 sync
automatically, simply skip tables matching *_fts and *_fts_* patterns.
* build: add compile-time guard for sqlite_fts5 build tag
Same pattern as netgo: compilation fails with a clear error if
the sqlite_fts5 build tag is missing.
* build: add sqlite_fts5 tag to reflex dev server config
* build: extract GO_BUILD_TAGS variable in Makefile to avoid duplication
* fix: strip leading * from FTS5 queries to prevent "unknown special query" error
* feat: auto-append prefix wildcard to FTS5 search tokens for broader matching
Every plain search token now gets a trailing * appended (e.g., "love" becomes
"love*"), so searching for "love" also matches "lovelace", "lovely", etc.
Quoted phrases are preserved as exact matches without wildcards. Results are
ordered alphabetically by name/title, so shorter exact matches naturally
appear first.
* fix: clarify comments about FTS5 operator neutralization
The comments said "strip" but the code lowercases operators to
neutralize them (FTS5 operators are case-sensitive). Updated comments
to accurately describe the behavior.
* fix: use fmt.Sprintf for FTS5 phrase placeholders
The previous encoding used rune('0'+index) which silently breaks with
10+ quoted phrases. Use fmt.Sprintf for arbitrary index support.
* fix: validate and normalize SearchBackend config option
Normalize the value to lowercase and fall back to "fts" with a log
warning for unrecognized values. This prevents silent misconfiguration
from typos like "FTS", "Legacy", or "fts5".
* refactor: improve documentation for build tags and FTS5 requirements
Signed-off-by: Deluan <deluan@navidrome.org>
* refactor: convert FTS5 query and search backend normalization tests to DescribeTable format
Signed-off-by: Deluan <deluan@navidrome.org>
* fix: add sqlite_fts5 build tag to golangci configuration
Signed-off-by: Deluan <deluan@navidrome.org>
* feat: add UISearchDebounceMs configuration option and update related components
Signed-off-by: Deluan <deluan@navidrome.org>
* fix: fall back to legacy search when SearchFullString is enabled
FTS5 is token-based and cannot match substrings within words, so
getSearchExpr now returns legacySearchExpr when SearchFullString
is true, regardless of SearchBackend setting.
* fix: add sqlite_fts5 build tag to CI pipeline and Dockerfile
* fix: add WHEN clauses to FTS5 AFTER UPDATE triggers
Added WHEN clauses to the media_file_fts_au, album_fts_au, and
artist_fts_au triggers so they only fire when FTS-indexed columns
actually change. Previously, every row update (e.g., play count, rating,
starred status) triggered an unnecessary delete+insert cycle in the FTS
shadow tables. The WHEN clauses use IS NOT for NULL-safe comparison of
each indexed column, avoiding FTS index churn for non-indexed updates.
* feat: add SearchBackend configuration option to data and insights components
Signed-off-by: Deluan <deluan@navidrome.org>
* fix: enhance input sanitization for FTS5 by stripping additional punctuation and special characters
Signed-off-by: Deluan <deluan@navidrome.org>
* feat: add search_normalized column for punctuated name search (R.E.M., AC/DC)
Add index-time normalization and query-time single-letter collapsing to
fix FTS5 search for punctuated names. A new search_normalized column
stores concatenated forms of punctuated words (e.g., "R.E.M." → "REM",
"AC/DC" → "ACDC") and is indexed in FTS5 tables. At query time, runs of
consecutive single letters (from dot-stripping) are collapsed into OR
expressions like ("R E M" OR REM*) to match both the original tokens and
the normalized form. This enables searching by "R.E.M.", "REM", "AC/DC",
"ACDC", "A-ha", or "Aha" and finding the correct results.
* refactor: simplify isSingleUnicodeLetter to avoid []rune allocation
Use utf8.DecodeRuneInString to check for a single Unicode letter
instead of converting the entire string to a []rune slice.
* feat: define ftsSearchColumns for flexible FTS5 search column inclusion
Signed-off-by: Deluan <deluan@navidrome.org>
* feat: update collapseSingleLetterRuns to return quoted phrases for abbreviations
Signed-off-by: Deluan <deluan@navidrome.org>
* feat: implement extractPunctuatedWords to handle artist/album names with embedded punctuation
Signed-off-by: Deluan <deluan@navidrome.org>
* feat: implement extractPunctuatedWords to handle artist/album names with embedded punctuation
Signed-off-by: Deluan <deluan@navidrome.org>
* refactor: punctuated word handling to improve processing of artist/album names
Signed-off-by: Deluan <deluan@navidrome.org>
* feat: add CJK support for search queries with LIKE filters
Signed-off-by: Deluan <deluan@navidrome.org>
* feat: enhance FTS5 search by adding album version support and CJK handling
Signed-off-by: Deluan <deluan@navidrome.org>
* refactor: search configuration to use structured options
Signed-off-by: Deluan <deluan@navidrome.org>
* feat: enhance search functionality to support punctuation-only queries and update related tests
Signed-off-by: Deluan <deluan@navidrome.org>
---------
Signed-off-by: Deluan <deluan@navidrome.org>
2026-02-21 13:52:42 -09:00
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-s -r "(\.go$$|\.cpp$$|\.h$$|navidrome.toml|resources|token_received.html)" -R "(^ui|^data|^db/migrations)" -R "_test\.go$$" -- go run -race -tags netgo,sqlite_fts5 .
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